Can't (de)serialize Buffer<u8>>

[emilk]

arrow_array_deserialize_iterator::<Buffer<u8>>(&array) yields:

error[E0277]: the trait bound `u8: ArrowEnableVecForType` is not satisfied
  --> arrow2_convert/tests/test_deserialize.rs:85:16
   |
85 |     arrow_array_deserialize_iterator::<Buffer<u8>>(&array)
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `ArrowEnableVecForType` is not implemented for `u8`
   |
   = help: the following other types implement trait `ArrowEnableVecForType`:
             f32
             f64
             i16
             i32
             i64
             i8
             u16
             u32
             u64
   = note: required for `Buffer<u8>` to implement `ArrowDeserialize`

So all types are supported except for u8. Buffer<u8> is sometimes desired over Vec<u8>, because of the internal ref-counting of Buffer.